Postscript
To conclude this History of Cold, I shall in∣stead of some other Experiments designed for this Treatise, subjoyn an Experiment elsewhere mention'd in the History of whiteness and black∣ness,
The works of the Honourable Robert Boyle, Esq., epitomiz'd by Richard Boulton ... ; illustrated with copper plates.
About this Item
- Title
- The works of the Honourable Robert Boyle, Esq., epitomiz'd by Richard Boulton ... ; illustrated with copper plates.
- Author
- Boyle, Robert, 1627-1691.
- Publication
- London :: Printed for J. Phillips ... and J. Taylor ...,
- 1699-1700.
- Rights/Permissions
-
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- Subject terms
- Physics -- Early works to 1800.
- Chemistry -- Early works to 1800.
- Medicine -- 15th-18th centuries.
- Link to this Item
-
http://name.umdl.umich.edu/A28936.0001.001
- Cite this Item
-
"The works of the Honourable Robert Boyle, Esq., epitomiz'd by Richard Boulton ... ; illustrated with copper plates." In the digital collection Early English Books Online 2. https://name.umdl.umich.edu/A28936.0001.001. University of Michigan Library Digital Collections. Accessed June 7, 2024.
Pages
Page 163
viz. Take a piece of Cork and having burnt it, till it be reduced to a black Coal, and then having slacked it in fair Water, it will, by being mixed with Gum-water, form a black Ink, which you may write what you please with; which writing if it be interlined with a co∣lourless Solution of Minium in Spirit of Vine∣gar, upon wetting the Paper with a spunge dip∣ped in a fluid Liquor, prepared by mixing three Parts of Quick-lime and one of yellow orpiment, and digesting them two or three hours in six∣teen Parts of Water, the invisible Solution of Minium will exhibit black Letters, and the o∣ther black ones will disappear; but whilst this fetid Liquor is preparing, it must be well shaken several times, that the Quick-lime and the powdered orpiment may the better impregnate it, and then the decanted and fil∣tred Liquor must be kept for use.
But besides this, there are several other ways of making Ink, which I could be glad to learn: And I my self have tryed that Words might be writ with a Solution of Minium, which I could render legible by the help of the fire.